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livebox:assembly [2012/04/09 11:47] – [1-Wire] minerva9 | livebox:assembly [2013/04/12 14:11] – [HAH PCB assembly notes] minerva9 | ||
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* A 433MHz RF transmitter | * A 433MHz RF transmitter | ||
* A LCD (1x16) | * A LCD (1x16) | ||
+ | * A DS18B20 temperature sensor | ||
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====== HAH PCB assembly notes ====== | ====== HAH PCB assembly notes ====== | ||
- | {{: | + | {{: |
+ | Click image for enlargement | ||
Before starting, make sure that you have all of the parts that you require. Components are packaged as per the [[http:// | Before starting, make sure that you have all of the parts that you require. Components are packaged as per the [[http:// | ||
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Remember to align the notch on the socket with the notch on the PCB legend. Now, fit the two caps and the xtal. {{ : | Remember to align the notch on the socket with the notch on the PCB legend. Now, fit the two caps and the xtal. {{ : | ||
- | Jumper JP1 should be left unfitted. JP3 should be fitted and jumper-ed to short pins 1 and 2. JP4 should be fitted and pins 1 and 2 shorted. Note that our newer PCBs don't need any jumpers. | + | Jumper JP1 should be left unfitted. JP3 should be fitted and jumper-ed to short pins 1 and 2. JP4 should be fitted and pins 1 and 2 shorted. Note that our newer PCBs only have one jumper (JP1), which should be fitted and jumper-ed. |
If you have relays to fit, it is easier to fit the diode, resistor (4K7 ohm) and transistor (required to drive the relay) before fitting the relay itself. <note warning> | If you have relays to fit, it is easier to fit the diode, resistor (4K7 ohm) and transistor (required to drive the relay) before fitting the relay itself. <note warning> | ||
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{{: | {{: | ||
- | Solder the aerial (a 6.47" piece of wire) onto the RF module solder pad connector (marked ' | + | Solder the aerial (a 6.47" piece of wire) onto the RF module solder pad connector (marked ' |
\\ | \\ | ||
{{: | {{: | ||
\\ | \\ | ||
Next, fit the voltage regulator (marked as IC1 on the PCB legend).\\ | Next, fit the voltage regulator (marked as IC1 on the PCB legend).\\ | ||
+ | This regulates the 15V feed from the Livebox down to 12V for the RF module. | ||
Ensure that the flat side on the component matches the PCB legend. | Ensure that the flat side on the component matches the PCB legend. | ||
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===== 1-Wire ===== | ===== 1-Wire ===== | ||
- | The only 1-Wire device that we currently support is a temperature sensor - the Dallas Semiconductor DS18B20, up to 15 of these can be chained to the bus. We use a standard 3.5" | + | The only 1-Wire device that we currently support is a temperature sensor - the Dallas Semiconductor DS18B20, up to 15 of these can be chained to the bus. We use a standard 3.5mm audio plug as extension leads and Y splitters are cheap and readily available to make our bus connectors. |
{{1wire-connector.png}} {{18b20-front.png}} {{18b20-bottom.png}} | {{1wire-connector.png}} {{18b20-front.png}} {{18b20-bottom.png}} | ||
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{{: | {{: | ||
- | RJ45/Cat5 can also be used. This is definitely more reliable for longer cable runs. There are various ' | + | RJ45/Cat5 can also be used. This is definitely more reliable for longer cable runs. A [[http:// |
Further RJ45 related connection info [[http:// | Further RJ45 related connection info [[http:// |