Equipment catalog

…der versions will likely say 400mAh. Now, this is nothing compared to the 3A+ of the 18650 ’s and therefore does not have internal protection as other hi-current lithium cells. That is a plus…

…f an op amp across that. Of course with adjustment for the gain etc. I think we used 1N914 diodes or 1N4148. I haven’t retried that setup since. At one time I had a copy of the whole circuit…

… there is a single pin that are 5V tolerant … <…> Ollie Mon Apr 18, 2016 8:27 pm The 2N7000 is proven technology for level shifting. Any comments about the TI TXS0108E. It is not too expensiv…

…% duty cycle. The former is realized with a smitt-trigger and a divider trough two ( HC7474 ). Therefore the input-frequency is multiplied by two to eliminate the divider. DLO138-SPI-Display_S…

…please wait. write speed and latency speed,max,min,avg KB/Sec,usec,usec,usec 4393.39, 7474 ,112,114 4328.73,10052,112,116 4378.00,7742,112,115 Starting read test, please wait. read speed and …

…tops: 3 pins – 8 bit Shift registers: 2 + 3 + 1 = 6 (mouser: 0.215$ @ 100pcs as SO16 74AHCT595D ) The remaining pins can be used for LCD/SD/…, assuming those are suited for that purpose. Of course…

…l. -> … 704#p16704 goran.mahovlic Mon Feb 19, 2018 9:30 pm tnx I did it already with 74HC04 but I have problem with serial … ematic.JPG and I can read data with just USB-SERIAL Just try to us…

…re wave to sine is pretty hardcore. mausi_mick Tue Jan 17, 2017 2:30 pm Hi, with the HC14 it’s ok for lower frequency (20MHz?), but you have something to do with the duty ratio: ST M32_O_Sc…

…orage as a library viewtopic.php?f=13&p=43847#p43847 my guess is take some 74hc595 + 74hc165 it may be possible to put together a 64 keys keyboard and 2 of 74hc595 + 1 of 74hc165 you may be ab…

…d to Vcc. This line switches correctly the direction of one of the bus transceivers ( HC245 ) on the board, on which LCD_D0 and D1 are connected. Only if this pin is high, the pins LCD_D0 and …

…ftware do DSO-150? I understand, it is much like DSO-138, but with digital switches ( 74HC4051 )? Here: (I love that “band-witch” part in first line… Very Happy ) … _Shell.pdf willfly1 Mon Feb 27…

…tter with the MCP6S91/92 (1 Pin) or a combination from DSO150 ( only inputstage with HC4053 (1Pin)) and MCP6S91/92. The input of the DSO150 is a little bit better and easier to realize as the…

…inputs, a latch and an OE pin, it is likely that it is based on serial shifters like HC595 where the OE pin is completely unhinged from the input circuitry. implementing ppm over pwm hardwar…

… / Mass Storage as a library viewtopic.php?f=13&p=43847#p43847 my guess is take some 74hc595 + 74hc165 it may be possible to put together a 64 keys keyboard and 2 of 74hc595 + 1 of 74hc165 you…

…’m just wondering, when using the DIR/STEP driver interface, why not put them behind SN74HCT595 (or 74AHCT595) shift register(s)? With one of these, the board should be able to drive 4 steppers f…

… point is, I want to look datasheets, could I use some other chip based module, like AD9833 , AD9850, etc. Thank You! mausi_mick Sat Jan 07, 2017 3:09 pm I think with the AD9850 it’s similar l…

…l be difficult to make 16.55Mhz from this board, I recommend you by something like a AD9850 board to generate your 16.55Mhz signals Flycatcher Fri Jul 28, 2017 3:15 pm Hi Roger! Thank you for…

…cles */) BTW if anybody is looking for a signal function generator, asearch ebay for AD9850 – These little boards are quite useful – in fact I can see another little project coming up. The ST…

… [email protected] ahull Sun Sep 13, 2015 10:17 pm I’m a little unclear, do you mean AD9850 and/or AD9959 – I’m not familiar with the part numbers you quoted. I was however thinking of having…

…ri Jan 06, 2017 4:41 pm I have connect the last ? free pins of the maple mini with a AD9851 DDS board. And with a small modification (function 7: set frequency AD9851) I can set the frequency…

…integrate Touch-functionality (URTOUCH-Lib) and test it with frequency input for DDS AD9851 : the first picture shows the Touch Panel for set frequency, the second the selected frequency from …

…aple • Compiling libraries... ‣ SPI [C:\Users\pito\Documents\UECIDE\libraries\SPI] ‣ ADS1110 [C:\Users\pito\Documents\UECIDE\libraries\ADS1110] ‣ MAX7219 [C:\Users\pito\Documents\UECIDE\librar…

…om 4.2 – 0.22 ~ 3.9v to keep running off a single charge till around 2v. a lm1117 or ams1117 has a 1v dropout which would be ok for 5v but with 4.2v that leaves 3.2v at the stm32 even when ful…

…y if the LDO can’t supply that much, some LDO supply a measly 100ma, but i think the AMS1117 on baite mini can supply up to 1A, that’s pretty beefy aster Fri Jul 28, 2017 10:29 am setup: power…

…e86 wrote:I connected both. cologne86 Wed Aug 31, 2016 9:32 am in my case there is a ams1117 drop down regulator on the lcds pcb, so it works with only 5v connected for both stevestrong Wed Au…

… regulator, I’ll check this later). Even with the BAITE ones (they have the “bigger” AMS1117 clone voltage regulator) I wouldn’t connect them directly to such powerful lipos: I burnt those AMS…

…ng is adding the Fuse holder and i think that i’ll replace the Buck converter for an ams1117 , as the 3.3v arent used for anything more than external interfaces (Bluetooth module, Servos). Comi…

… should I power the target board? Could it be better to use a board which features a AMS1117 ?! Thanks in advance and bye, E. Side questions for who have both the blue pill and the new black pi…

… this week. Let me know if you would like me to get some for you. The prices for the AP2114HA -3.3TRG1, LQW2BASR47J00L and MCP73812T-420I/OT seemed better there and the shipping can be covered b…

…oupling to external hardware, without any significant mods to the board. I connect a BAT46 diode in series with VBB, and connect a coin cell to it. My experience with calibrated, room temper…

…s more convenient. Most of smartphones use micro USB,not mini USB. 2.Leaf Maple uses BQ24010 as battery charger IC, MapleTree uses BQ24075T. BQ24075 is with Power path function.It is as same a…

… mini USB. 2.Leaf Maple uses BQ24010 as battery charger IC, MapleTree uses BQ24075T. BQ24075 is with Power path function.It is as same as smart phone battey charger system. 3.Leaf Maple uses L…

…ro USB,not mini USB. 2.Leaf Maple uses BQ24010 as battery charger IC, MapleTree uses BQ24075T . BQ24075 is with Power path function.It is as same as smart phone battey charger system. 3.Leaf Map…

…connectors and the power triac, as I couldn’t find existing KiCad footprints for the BTA41 , and not for the Dimple 40A screw terminal. (nor for the ACS712-20, or for a SMD bridge I was going…

…ainable. When a teen, I used to order from those mail-order catalogs … things like a CK722 or surplus military items such as radiosondes for parts! Often, it was far less expensive to just g…

… For the record, here are my button cell and holder sources… Button cell <Select the CR1220 option Button cell holder ahull Sun May 24, 2015 9:21 pm Just in case you are wondering, that littl…

…sing this formula : Iavg = ((I1xT1) + (I2xT2))/(T1+T2) = 0,0386 mA so do the math. A CR123 should have 1500mAh but I’m not discharging it to 2V, that’s to low for the light sensor. So I take…

…he calibration constant register. I had to mod it to do that. I simply connected the CR2025 battery to the VBAT. electrobling Thu Apr 05, 2018 1:42 pm [chinhduy – Tue Apr 03, 2018 8:23 am] – …

… old computer mainboards, maybe they have the wrong capacity. VBAT is connected to a CR2032 Battery which works if I use LSI instead of LSE. The crystal seams to oscillate, what i only can me…

…iscovery has this interesting peripherals: – MP45DT02 ST-MEMS-Microphone – Audio-DAC CS43L22 with class D amplifier – 3-Achsen-ST-MEMS-accelerometer and I thought I can easily use them with th…