Build a Zynthian

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1 How to build a Zynthian (Prototype-3)

Manual is currently in development! (20150406)

1.1 Prerequireries

Want to join the Zynthian community? No problem! Build your own one is not very difficult.

1.1.1 Needed competences

For building the hardware you should have the following competences:

  • Soldering
  • Not to be afraid working with electronic hardware and parts
  • Basic understandment of reading electronic circuit diagrams

1.1.2 Tools

  • Screw drivers
  • Soldering iron
  • Tin-solder
  • Side cutter
  • Magnifiying glass

1.2 Hardware

1.2.1 Bill of Material

Here is a list of hardware you need. I have noticed also where I bought the hardware and the price. This items are bought in February 2016 in Germany, so all descriptions are in german and prices are in EUR. If you live in other countries there maybe are better sources of supply for you in your home country.

No Shipper Order no. Description Pieces Price per piece [€]
1 http://www.reichelt.de 1N 4148 Planar Epitaxial Schaltdiode, DO35, 100V, 0,15A 1 0,04
2 http://www.reichelt.de 6N 138 OPTOKOPPLER 1 0,58
3 http://www.reichelt.de RASPBERRY PI 2 Raspberry Pi 2, 4x 900 MHz, 1 GB RAM 1 37,50
4 http://www.reichelt.de RPI HB DAC+ RCA HiFiBerry DAC+ RCA, Raspberry Pi Shield 1 35,90
5 http://www.reichelt.de 1/4W 220 Kohleschichtwiderstand 1/4W, 5%, 220 Ohm 1 0,10
6 http://www.reichelt.de 1/4W 1,0K Kohleschichtwiderstand 1/4W, 5%, 1,0 K-Ohm 1 0,10
7 http://www.reichelt.de 1/4W 10K Kohleschichtwiderstand 1/4W, 5%, 10 K-Ohm 1 0,10
8 http://www.reichelt.de MKS-02 100N WIMA Folienkondensator, Rm 2,5mm 100nF 4 0,15
9 http://www.reichelt.de GS 18P IC-Sockel, 18-polig, superflach, gedreht, vergold. 1 0,32
10 http://www.reichelt.de GS 8P IC-Sockel, 8-polig, superflach, gedreht, vergold. 1 0,19
11 http://www.reichelt.de SL 2X25G 2,54 2x25pol.-Stiftleiste, gerade, RM 2,54 1 0,24
12 http://www.reichelt.de MAB 5S DIN-Buchse, 5-polig 1 0,24
13 (OPTIONAL) http://www.reichelt.de NTA 176 6,3 Mono-Klinken-Bu. auf Cinch-St. 2 0,35
14 http://www.reichelt.de NT MUSB 2 SW Micro-USB Steckernetzteil, schwarz, 5 V, 2 A 1 8,40
15 http://www.segor.de MCP23008-E/P MCP23008 8 port I2C-GPIO extender 1 2,10
16 http://www.amazon.de Adafruit PiTFT 2.8" Adafruit PiTFT Touchscreen Display, 2,8 Zoll, für Raspberry Pi Computer 1 32,00
17 http://www.ebay.de 12mm Rotary Encoder Switch Rotary Encoder with switch, 20 steps 4 0,60
18 http://www.ebay.de Poti knob Poti knob for Rotary encoder (Pos. 17) 4 1,50
19 http://blog.zynthian.org Encoder PCB PCB for encoders 2 10,00
20 http://blog.zynthian.org 2in1 PCB PCB for MIDI and GPIO extension 1 10,00
21 http://blog.zynthian.org Main Bus Ribbon Cable Raspberry Main Bus Ribbon Cable 1 20,00
22 http://blog.zynthian.org Mini-ribbon cable Mini-ribbon cable (6 pin female connector to 6 female jumper connectors 3 3,00
23 http://www.saturn.de SD card Samsung 32GB SD card 1 14,00
24 - Short connector cables Connector cables pin-female/pin-female for MIDI and external GPIO connector from 2in1 board 4 ??,??
25 - Multi-pin connector 1x40pol.-Stiftleiste, gerade, RM 2,54 1 ??,??

Notes:

  • Pos. 19-22 are directly ordered from Zynthian.
  • There is no case in this BoM - You have to build your own.
  • Sum of all is: 200,27 € (plus shipping)

Zynthian Parts.jpg

1.3 Implement and soldering of the PCBs

1.3.1 Step 1: 2in1 board

1.3.1.1 You need:

  • 1 * 2in1 PCB (Pos. 20)
  • 2 * 100nF capacitor (Pos. 8)
  • 1 * multi-pin 2 pins wide (part of Pos. 24)
  • 1 * multi-pin 6 pins wide (part of Pos. 24)
  • 1 * multi-pin 8 pins wide (part of Pos. 24)
  • 1 * resistor 10 kOhm (brown-black-orange-gold, Pos. 7)
  • 1 * resistor 1 kOhm (brown-black-red-gold, Pos. 6)
  • 1 * resistor 220 Ohm (red-red-black-gold, Pos. 5)
  • 1 * diode 1N4148 (Pos. 1)
  • 1 * IC socket 8 pins (Pos. 10)
  • 1 * IC socket 18 pins (Pos. 9)
  • 1 * IC 6N138 (Pos. 2)
  • 1 * IC MCP23008 (Pos. 15)
  • 2 * Connector cable pin-female/pin-female
  • 1 * MIDI socket (DIN socket 5pins)
  • 1 * 2in1 PCB (Pos. 20)

2in1 Parts.jpg

1.3.1.2 HowTo:

  1. Start with assembling the diode onto the PCB. Be careful to do this the right way - the small black (or white) stripe on one side of the diode must fit the same side of the white stripe on the PCB!
  2. After that solder the resistors.
  3. Then assemble the IC sockets, but do not put the ICs inside. We will do this at the end of this task.
  4. After that, solder the capacitors and the multi-pin-rows.
  5. Now insert the ICs into the socket. Be careful to put them weith the notch on the IC towards the hole of the white rectangle showing on the PCB!

2in1 Solo.jpg

  1. For the MIDI socket you have to cut of one side of the female/female pin-connector and solder it on the DIN-socket. Connect them to pin 5 (2nd from left) and pin 4 (2nd from right).

MIDI-socket Solo.jpg

1.3.2 Step 2: Encoder boards

1.3.2.1 You need (for one Encoder PCB:

  • 2 * Rotary Encoder with switch (Pos. 17)
  • 2 * 100nF capacitor (Pos. 8)
  • 1 * multi-pin 6 pins wide (part of Pos. 24)
  • 1 * multi-pin 2 pins wide (part of Pos. 24)
  • 1 * Encoder PCB (Pos. 19)

Encoder Parts.jpg

1.3.2.2 HowTo:

  1. Notice! Due to the mounting of the encoders on a front panel, the 6-pin-row must be soldered from the bottom of the PCB (pin counting will be 1..6 from the lower side of the PCB!). The picture below shows the WRONG component side! (newer images will follow)
  2. The order of the following steps is not important: Solder the capacitors, the 2-pin-rows and the Encoders on the board (on the upper side) - that's it.
  3. You have to do this twice - you need two encoder boards.

Encoder Solo.jpg

1.3.3 Step 3: Pin row on the Hifiberry

1.3.3.1 You need:

  • 1 * HiFiBerry DAC+ RCA, Raspberry Pi Shield (Pos. 4)
  • 1 * 2x25pol.-Stiftleiste, gerade, RM 2,54 (Pos. 11)

Hifiberry parts.jpg

1.3.3.2 HowTo:

  1. For this part you should have some time. It will be very worse when damaging the Hifiberry!
  2. First of all: cut the 2*25 pin-row to 2*20 pin (perhaps with a cutter).
  3. Place the pin-row on the Hifiberry and start to solder on the back of the Hifiberry. I used to solder pins which are not next together to avoid hot spots. You also can pause some time for cooling down the area you soldered last.

Hifiberry Solo.jpg

1.3.4 Checking everything

Congratulations - half the way done!

Now you should check everything you soldered twice:

  • Is everything soldered right?
  • Are there small shortcuts from soldering iron? Fix them by removing!
  • Is the diode on the 2in1-PCB in the right direction
  • Are the ICs showing the right direction?
  • Are all pins of the ICs in their socket?

Hints:

  • Take magnifying glass and bright light for checking.

1.4 Connecting the cables

1.4.1 You need:

  • 1 * Raspberry Pi 2 (Pos. 3)
  • 1 * HiFiBerry DAC+ RCA (Pos. 4)
  • 1 * Adafruit PiTFT Touchscreen Display, 2,8 Zoll (Pos. 16)
  • 1 * Raspberry Main Bus Ribbon Cable (Pos. 21)
  • 3 * Mini-ribbon cable (6 pin female connector to 6 female jumper connectors(Pos. 22)
  • 2 * Connector cables pin-female/pin-female (Pos. 24)

TFT Raspi and Hifiberry.jpg PCBs and cables.jpg

1.4.2 Raspberry Pi and Hifiberry DAC+

Put the Hifiberry DAC+ onto the Raspberry Pi. With the Hifiberry there come 4 distance pieces and 4 screws (all plastic). Put them together as shown in the following picture.

Raspi and Hifiberry.jpg

1.4.3 TFT

1.4.4 2in1

1.4.5 Encoder

1.5 Creating the SD

1.5.1 Getting the Image

1.5.2 Writing the image to the SD card

1.6 First boot

1.6.1 Testing

1.6.2 Something won't work?