Many thanks for this award.
I'll keep the posts coming in 2021
Some build pics of the MetroModular Power 202 PSU.
It's a eurorack power supply. Model number: MM1537 v0.1
It's a very easy build. There are a few surface mount components, but they are 0805 and 1206.
Mouser 894-shhd001a3b41z
Its a DC/DC converter 18-75V in. 12V out 1.3A
The next 2 regulators are 580-OKI78SR12/1W36C
Some Links
+ Metromodular Facebook
+ Metromodular Youtube
+ Metromodular website
This is the USB connector
Orientate the LEDs so they sit nicely into the panel.
Don't forget the jumper
There are 6 (independent) channels / 6 modes per channel:
It's a:So quite useful.
.. teensy 3.1/3.2
hardware specs:
- teensy 3.2 @ 120MHz, w/ 128x64 OLED
- 16.67kHz update rate, < 100us trigger-to-output latency
- 2 clock inputs (> 100k input impedance; threshold ~ 2.5V)
- 4 CV inputs (100k input impedance, -/+ 5V, assignable to (almost) any parameter)
- 6 clock outputs (5 digital, 1 DAC (12 bit): 10V (GPIO), -/+ 6V (DAC))
- two encoders w/ switch; 2 tactile buttons.
- 14HP, ~ 25 mm Depth
- stupid name courtesy of M. Louis Lapicque
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This is where the OLED is parked.
OLED:
you can find these 7 pin,
1.3" displays on ebay, aliexpress and other places for < 10$.
they'll be ok, as long as the description claims that they are SH1106 (or SSD1306); and that the pinout is:
GND - VCC - D0 - D1 - RST - DC - CS, or
GND - VCC - CLK - MOSI - RES - DC - CS
| TL074 | SOIC-14 | 2x | 595-TL074CDR | output amplifier | |||||
| SOIC-14 | 1x | 579-MCP6004T-I/SL | CV input buffer | ||||||
| MMBT3904 | SOT-23 | 2x | 512-MMBT3904 | NPN | |||||
| 1N5817 | DO-41 | 2x | 621-1N5817 | Schottky, reverse voltage protection | |||||
| LM1117-5v0 | SOT-223 | 1x | 511-LD1117S50 | 5v LDO | |||||
| LM4040-5.0 | SOT-23 | 1x | 926-LM4040DIM350NOPB | prec. voltage reference, 5v0 | |||||
| fixed inductor, 10uH | 1206 | 1x | 81-LQH31MN100K03L | > 25mA |
| fixed inductor, 10uH | 1206 | 1x | 81-LQH31MN100K03L | > 25mA |
The inductor is just below the lower right corner of the teensy,
+ Inductors, ferric beads, noise reduction methods, etc
aLMOST THERE
I soldered the OLED permanently to the PCB, though I guess you can used a header to allow replacement.
The spacers, help to support the OLED. They rest on, but but aren't attached to the PCB.
Download the hex file
If you need to upload the hex file again, you can still do it, but leave the teensy connected to the Temps Utile module. It now receives its power from the module.
Connect the teensy to your computer via USB as usual.