Advanced receiver hardware - Revision history

G0MJW: /* Step 6 */

2021-03-27T20:09:46Z

Step 6

G8GTZ at 14:18, 24 March 2021

2021-03-24T14:18:24Z

G4EWJ: /* Testing */

2021-03-24T12:18:06Z

Testing

G4EWJ: /* Testing */

2021-03-24T12:17:24Z

Testing

G4EWJ at 12:09, 24 March 2021

2021-03-24T12:09:43Z

G4EWJ: /* Testing */

2021-03-24T12:02:15Z

Testing

G8GKQ at 15:57, 17 March 2021

2021-03-17T15:57:00Z

G8GTZ at 09:20, 15 March 2021

2021-03-15T09:20:42Z

G0MJW at 12:46, 10 March 2021

2021-03-10T12:46:51Z

G0MJW: /* Step 7 */

2021-03-10T12:19:02Z

Step 7

@@ Line 57: / Line 57: @@
 ===Step 6===
-Next the regulators and ferrite chokes:
+Next the regulators and ferrite chokes. You might want to put the board in the case to get the TO220 devices in the right place for bolting to the box. They need to be heatsinked:
 [[File:Stage 6.png|600px|Regulators and Chokes]]

@@ Line 2: / Line 2: @@
 The BATC advanced receiver hardware is a PCB designed to host up to 2 Serit FTS4334L or FTS4335 NIMs, which can receive DVB-S or DVB-S2, and a Raspberry Pi4.
-[[File:Boxed.png|700px|center|Boxed]]
+[[File:Boxed.png|400px|center|Boxed]]
 ==Applications==

← Older revision		Revision as of 12:18, 24 March 2021
Line 95:		Line 95:
	If all OK, go to the software installation section. The PI OS needs to be loaded and the PICs need to be programmed, which is done automatically by the software installation process.		If all OK, go to the software installation section. The PI OS needs to be loaded and the PICs need to be programmed, which is done automatically by the software installation process.

−	See here for WinterHill ~~documents~~ and software downloads: '''[[WinterHill Receiver Project]]'''	+	See here for WinterHill documentation and software downloads: '''[[WinterHill Receiver Project]]'''

← Older revision		Revision as of 12:17, 24 March 2021
Line 94:		Line 94:

	If all OK, go to the software installation section. The PI OS needs to be loaded and the PICs need to be programmed, which is done automatically by the software installation process.		If all OK, go to the software installation section. The PI OS needs to be loaded and the PICs need to be programmed, which is done automatically by the software installation process.
		+
		+	See here for WinterHill documents and software downloads: '''[[WinterHill Receiver Project]]'''

@@ Line 8: / Line 8: @@
 The first application to use the advanced receiver hardware will be the [[WinterHill Receiver Project]] which is a multi-channel DVB-S2 receiver running on a RPi desktop.
 ==Hardware Build==
@@ Line 15: / Line 22: @@
 [[File:Built Receiver.jpg|600px||Built Hardware]]
 [[File:Reverse.jpg|600px|Reverse]]
 It is best to build this in order of component height. It took the author about 3 hours. There is an old proverb, a man with a watch knows the time. A man with two watches is never sure. While working with SMT, if you make a mistake, having two soldering irons to had is a great help when removing misplaced components. The other essential trick is to have the right tools for the job, a fine tip iron and thin, ideally 0.3mm solder. Ideally, use stainless steel tweezers for placement. With experience you can use bar solder and a poker, but you are on your own there. Plenty of light and magnification is a must. If you don't have a magnifier then some +2 or +3 reading glasses might help those with normal vision.

← Older revision		Revision as of 12:02, 24 March 2021
Line 92:		Line 92:
	The board is now ready for testing. First fit the PI4 and jumpers JP1, JP2 and JP3. If you test it outside the case use no more than 12V, otherwise U2 will get hot. It needs to be heatsunk to the case. So does U1 if you plan to use it. The current should be under 1A.		The board is now ready for testing. First fit the PI4 and jumpers JP1, JP2 and JP3. If you test it outside the case use no more than 12V, otherwise U2 will get hot. It needs to be heatsunk to the case. So does U1 if you plan to use it. The current should be under 1A.

−	If all OK, go to the software installation section. The PI OS needs to be loaded and the PICs need to be programmed.	+	If all OK, go to the software installation section. The PI OS needs to be loaded and the PICs need to be programmed, which is done automatically by the software installation process.

← Older revision		Revision as of 15:57, 17 March 2021
Line 6:		Line 6:
	==Applications==		==Applications==

−	The first application to use the advanced receiver hardware will be the [[~~Winter Hill receiver project~~]] which is a multi-channel DVB-S2 receiver running on a RPi desktop.	+	The first application to use the advanced receiver hardware will be the [[WinterHill Receiver Project]] which is a multi-channel DVB-S2 receiver running on a RPi desktop.

← Older revision		Revision as of 12:19, 10 March 2021
Line 62:		Line 62:
	===Step 7===		===Step 7===

−	Now for the PI GPIO header. This requires thought and care. It needs to be at the correct height above the PCB and that depends on how you plan to mount the PI and if it has a heatsink case or not. Test fit the header to the PI and mount the PI on the PCB, then the header will be in the correct place. Removing the header afterwards is almost impossible without damaging the PCB so take time to get this right. Best now remove the PI to prevent damage, or treat it with care if you choose not to. If it is in the metal case it will probably be fine. If mounting the PI PCB on stand-offs 20mm ones are a good choice, providing clearance for a 40x40x10mm fan. The fan blowing air on the PI appears to provide adequate cooling. Remember to put vents in the case, circulating hot air inside a sealed box will keep the temperatures even, but it won't do much to actually cool it all down.	+	Now for the PI GPIO header. This requires thought and care. It needs to be at the correct height above the PCB and that depends on how you plan to mount the PI and if it has a heatsink case or not. Test fit the header to the PI and mount the PI on the PCB, then the header will be in the correct place. Removing the header afterwards is almost impossible without damaging the PCB so take time to get this right. Best now remove the PI to prevent damage, or treat it with care if you choose not to. If it is in the metal case it will probably be fine. If mounting the PI PCB on stand-offs 20mm ones are a good choice, providing clearance for a 40x40x10mm fan. The fan blowing air on the PI appears to provide adequate cooling. Remember to put vents in the case, ideally underneath the fan as circulating hot air inside a sealed box will keep the temperatures even, but it won't do much to actually cool it all down. It is also worth putting exhaust holes near the NIMs as these also tend to get warm. Total dissipation is around 10 Watts.